To Next PageTo Next PageWhat to do if Curtis 1226 shows overcurrent?
If your Curtis Controller displays an overcurrent error, it could be due to an external short in the phase M1 or M2 motor connections, or the controller itself might be defective. Check the connections and then cycle the keyswitch.
What to do if Curtis 1226 displays severe overtemp?
If your Curtis Controller is showing a severe overtemp error, it means the controller is operating in an extremely hot environment. Decrease the heatsink temperature to below 85°C, then cycle the keyswitch.
What does Curtis 1226 Controller BB Wiring Fault mean?
A 'BB Wiring Fault' on the Curtis Controller indicates bad crimps or faulty wiring for the emergency reverse normally open switch. Fix the wiring, then cycle the keyswitch.
What causes severe B+ undervoltage in a Curtis 1226 and how to fix it?
A severe B+ undervoltage in your Curtis Controller can be caused by several factors: a system other than the controller draining the battery, high battery resistance, a disconnected battery, a blown B+ fuse, the main contactor failing to close, or incorrectly configured undervoltage parameters. Address these possible causes and then cycle the keyswitch.
What does it mean if Curtis 1226 shows main contactor did not close and what to do?
If the Curtis Controller indicates that the main contactor did not close, it could be due to oxidized or burnt contactor tips, an external load preventing capacitor bank charging, a blown B+ fuse, incorrectly configured voltage parameters, the contactor opening unexpectedly, removed wiring to the contactor coil, or a defective coil. Address these potential causes and then cycle the keyswitch.
What causes a Curtis 1226 Controller to overheat?
A Curtis Controller might overheat if it's operating in an extremely hot environment, if there's excessive load on the vehicle, or if it's incorrectly mounted, preventing proper cooling. Address the possible causes.
What to do if Curtis 1226 displays motor temp hot?
If the Curtis Controller indicates 'Motor Temp Hot,' it means the motor temperature is at or above the temperature specified by the Temperature Hot parameter, or the Temperature Hot parameter is incorrectly configured. To resolve this, cool the motor until its temperature is below the Temperature Hot parameter value, or adjust the Temperature Hot parameter.
What causes severe B+ overvoltage on a Curtis 1226 and how do I resolve it?
A severe B+ overvoltage on a Curtis Controller can occur if the user overvoltage parameter is incorrectly configured, the battery resistance is too high for the regen current, or the battery disconnected during regen braking. Address the possible causes, then cycle the keyswitch.
What does it mean if Curtis 1226 shows main contactor welded and what to do?
If the Curtis Controller indicates that the main contactor is welded, it means the main contactor tips are welded closed, motor phase M1 or M2 is disconnected or open, or an alternate voltage path is providing current to the capacitor bank. Address the possible causes, then cycle the keyswitch.
What to do if Curtis 1226 Controller displays precharge failed?
If the Curtis Controller displays a 'Precharge Failed' error, it could be due to an external load on the capacitor bank (either the Brake+ or B+ connection terminal for external contactor models) preventing it from charging, or the controller itself may be defective. Cycle the keyswitch.
General| Brand | Curtis |
|---|---|
| Model | 1226 |
| Category | Controller |
| Language | English |
Details on M5 bolt-on terminals for battery and motor connections.
Information on the 3 low-current connectors (J1, J2, J3).
Representative wiring diagram for typical Class III vehicle applications.
Overview of flexible I/Os and predefined functions for applications.
Information on the 3 generic drivers supporting PWM and different modes.
How analog inputs support throttle potentiometer circuits.
Contains menus for configuring application-specific settings.
Parameters to configure speed-related functions like max/min speeds.
Parameters to configure two distinct speed modes for different conditions.
Defines high and low speed thresholds for various parameters.
Specifies throttle type, responsiveness, and HPD/SRO function.
Explains deadband, max, offset, and map parameters affecting throttle response.
Explains High Pedal Disable and Static Return to Off safety functions.
Menus for battery voltage monitoring and protection settings.
Parameters for configuring the Battery Discharge Indicator (BDI) output.
Configuration options for the emergency reverse feature.
Detailed configuration for the emergency reverse safety function.
Contains menus for configuring inputs, outputs, and limits.
Menus for configuring analog inputs 1 through 5.
Assigns functions to switches and controls for analog inputs.
Sets maximum current limits for drive, boost, regen, and brake operations.
Configuration for motor resistance, current rating, and speed settings.
Steps for preparing the vehicle before controller programming.
Procedures to set up the throttle type and ensure full range operation.
Tuning the throttle's deadband for proper neutral range and brake engagement.
Setting wiper voltage to achieve 100% controller output at full throttle.
Verifying correct throttle operation and polarity for reverse features.
Checking critical parameters and switch states for correct configuration.
Procedure to accurately set the System Resistance parameter for performance.
Setting speed limit pot maximum and minimum positions for each speed mode.
Configuring acceleration and deceleration rates for smooth throttle response.
Configuring IR Comp and Anti-Rollback Comp for load and slope conditions.
Adjusting Gear Soften and Soft Start for smoother vehicle response.
Testing and fine-tuning the BDI configuration for accuracy.
Using programming devices to view real-time data and faults.
Explains fault code structure and how LEDs indicate digits.
Guidance on interpreting faults and their causes and actions.
